newman



A. L. NEWMAN.

AUTOMATIC TRAIN STOP.- APPLICATION FILED IUJ.Y 22,1919.

1,349,525. Patented Aug. 10, 1920.

Z SHEETS SHEET 1-- "mun nnmf INVENTOR A.M6Winan A. L. NEWMAN.

AUTOMATIC TRAIN STU/P.

APPLICATION FILED JULY Z2 I919- I 1,349,525. Patented Aug. 10, 1920. 2 SHEETS-SHEET 2- I INVENTOR To all whom it may 00mm? ALBE T LJNEWMAN 0FMEMPH1S,,TIJNfiESSEEv l AU oMA rio' waimgs'wagiq Be it known that I, ALBERT a citizen of tl1e 'United States, residing Memphis, in, the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Automatlc Tram Stops, of which the following 'isa specifi-Y 021131011. 2 I r v Th1s invention has reference toautomatic devices for; stopping trains, and particularly to means 'for stopping a train inlthe, event of derailment of thetrain. I e e g The object of the invention isgto provide: means connected with the iai'r'brake system of a train. for automatically releasing; the

air and stopping the train, should any one of the cars or. the engine become. derailed;

the inventionibeing capableof application to freight or, passenger cars'ywithoutany material alter'ation'in the construction, and p l pocketillis provided in which is placed'a' xcoiledspring '12, held in position by a'sorew fulfilling the intended purpose in an: effe' c-f tive manner. j l The invention consists in the novel con-Q struction and combination of parts hereinafter particularly set forth and pointed out I in the claims; it being understood jthat; while the drawing shows the zpreferredem-- bodiment of this invention, I do notwish to be limited to the exact constructiombut de; sire to make such chan'gesin the form, s ze,

proportion and minor details of construe;

inventionthereto; v p H Fig. 2 is an end view of thejsame; Fig. 3 is a detail view looking-atthe front, with partsin section, illustrating the bracket carrying the stop cock;

Fig. 4 is a vertical sectional same. V

Like reference characters designate corre I sponding parts in the several figures of the drawing. I 7

Referring to the drawing,'I have shown in Figs. 1 and 2, a railway truck ofordinary construction with my invention. applied.

thereto. As the truck forms no :part ofthis invention, it will only be incidentally 're ferred to. i 7 J j v 1 designates the train line airpipe of the air brake system. employed on railway Specification of Letters Patent.

t e screw cap and coiled de'elevation of "so much: 1

view ofthe v I the screw plug 17.- The turning plug 6 of 3 the cock 6 has its port 22 normally out of registerwith the ports 20 and 21, respec- "tively. The means by which said plug is- T 2,'towhich is'seou re'd a branch pipecon I e'l 'lt a ,Au .'1o,'.192o. Application filed Filly-22, 1919. ;serialifo. i3 gg 5eg, I Q

'ftrai'ns, '-pl-,ovidedfat a pbint thereon with a 2 arm' 14 ofa bracket 7, 'rigidly mounted on r one of the beams of the ftruckin the man} or outer end'of the plug of the stop cook a capl3, as shownin Fig. 4. The purpose of spring s to nsure a: tight fit for the valve.

. The -ofiset am; 14.11 a each side eat turning plug ,of the cock 6, short tubular 'eXtensions15 and 16 which are internally 1" The "extensions 15 and 16 l have longitu dinal ports; 20; and 21', respectively, which .65 ner[shown.[ This stop cock consists of an' inwardly tapered plug *6, which is mounted forfrotary, movement in a correspondingly tapered opening or seat of theofiset arm"letofthe bracket 7, and'hasits inner endextended beyond said arm and provided lwith fafpolygonaljprojection 8,"to whichjis I rigidlyffitted the enlarged head. 9 of a lever ar1n" 10,the latter being retained in place by 1 means of jafcotter key, which is fitted in the twoholes of theparts Sand 9. At the'other threadedQ Fitted "in; the extension 1 6is:a screw 'pl11g' 17 having "a longitudinal open:

are brought'into' and lo'ut of register with the transverse port 22provided in the turn.

derstoo'd that 'whenltheport '22 of the said i 21, the air from the trainline pipe may escape or .-bleed-through the opening 18 of turnedor operated to efii'ect this change of position will now be referred to.

'plugf6 "isin'registerwith the" ports 2O and f i The lever arm 10, which is rigidly o0n-,

nected to theinner' end .8 of said turning plug, has its outer end adjustably connected 2 to the upper end of a. pivoted link 23, the

lower end of which is connected at or about the center to a transversely disposed operating bar 24:, the central portion of which is bowed, as shown, while the two ends extend in straight lines and'normally lie in a plane above the rails of a track, and between the wheels of the truck, as shown in Fig. 2, of

the drawing.

Rising from the straight ends of said opcrating bar 24 in rear of the terminals therearm 10. V

brackets re oblong at the top and circular at the bottom so as to hold the guide bars steady and prevent/any sidewise movement. In order to set the operating bar 2 the correct distance from the rail, holes 27 are.

provided in the upper ends of the guide arms 25, and pins 28 'arepassed through .the holes and across'the upper. ends of the guide brackets 26-, to support the operating bar from dropping down, The adjustment provided inthe. guide. arms 25 necessitates a corresponding adjustment in the connection between the link 23 and the lever The operation of this invention will be ob viousto anyone skilled in the art. Under normal conditions the'operating bar 24 is supported at a height of several inches above the rails and between the wheels, and below theplane of the axle as shown in Figs. 1 and 2 of the drawings. In the event of the breakage of a car truck, acar axle, or in case of derailment, the car will drop rela- 7 tively to the track, and the straight ends of the operating bar 24 will contact with the upper faces of therails. In doing this, the link.23 will be actuated to swingthe lever V arm 10, and turn the turning plug of the i stop cock, causing the port 22 thereof to register with the ports 20 and 21, resulting in the air being released and bringing the train to a stop. It {will be noted that'by the provision of the hole 18, which is of an inch in diameter, provided in the plug 17, said hole being elf-considerably less diameter than theport of the plug, the air is let out slowly, which prevents the application of the emergency brake,

The purpose of providing the stop cock 4:

which is of standard construction, is to provide for cutting out the air at that point in case of an accident should the stop cock 6 become disabled. It will be noted that the mechanism may be applied to a truck without making any alteration in the construction thereof, as the guide bracket 26 and the supporting bracket 7 may be fitted to any truck.

What I claim is 1. In a valve adapted to be applied to a car truck and to be connected with an air brake, the combination with a bracket supported on said truck, a plug detachably and revolubly mounted on'said bracket and having a transverse port, saidbracketh'aving a pair of ports contiguous to said plug, said pair of ports being brought into and out of communication withthe port of said plug by the turning movement ofthe latter, a perforated plug fitted to the bracket and having its perforation in communication with one ofsaid pair of ports, and of less diameter than the same, a nipple fitted to the other one of said pair of ports, and means connecting the nipple to the train line pipe.

2.1The combination with a railway truck, a train line pipe and a stop cock of an operating bar for opening and closing said stop cock, said bar being supported transversely above the rails of a track and below the plane of the axle of said truck, vertically disposed guide arms rising from said bar near opposite ends, guide brackets mounted upon the'truck and havingope'nings through which the guide arms extend, and means for vertically adjusting saidv guide arms, the openings of saidguide brackets gradually increasing in width toward'the top, for the purpose set forth.

In testimony whereof I affix my signature.

. ALBERT L. NEWMAN. 

